An Amateur Astronomer Has a Telescope with an Objective Lens

question 36

Multiple Choice

An amateur astronomer has a telescope with an objective lens that measures 20 cm in diameter and 100 cm in focal length.What focal length of eyepiece should he or she choose in order to obtain a magnification of 50× ("50 power") ?

• A) 0.5 cm
• B) 0.4 cm
• C) 2 cm
• D) 5 cm

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Definitions:

Mail Merge Document

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The process of applying criteria to select a subset of addresses from a mailing list, ensuring messages are sent only to targeted individuals.

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